It really depends on what you are working with, you can either use crm like podio or if you are more into standart outlook design you can use calender and booking software like https://www.add-on.com/ makes.
It really depends on what you are working with, you can either use crm like podio or if you are more into standart outlook design you can use calender and booking software like https://www.add-on.com/ makes.